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試卷名稱：110年 - 110 國立臺灣大學_碩士班招生考試_電信工程研究所甲組:電磁學及電磁波#113085
年份：110年
科目：研究所、轉學考(插大)◆電磁學
30. A 50-Ω transmission line is terminated by a load. Which one of the following statements is wrong?
(A)Ifthe load impedance is 0Ω and the electrical length of the transmission line is 90 degree, the input impedance is ∞.
(B) If the load impedance is 100 Ω and the electrical length of the transmission line is 90 degree, the input impedance is 20Ω.
(C) Ifthe load impedance is 200Ω and the electrical length of the transmission line is 180 degree, the input impedance is 200Ω.
(D) If the load impedance is 30 Ω and the electrical length of the transmission line is 360 degree, the input impedance is 30Ω.
